./Ultimate.py --spec ../../sv-benchmarks/c/NoOverflows.prp --file ../../sv-benchmarks/c/termination-crafted/easy2_true-no-overflow_true-termination_true-valid-memsafety.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_4175c4f9-b78e-4fdd-9a6b-922b5ebe9d3e/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_4175c4f9-b78e-4fdd-9a6b-922b5ebe9d3e/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_4175c4f9-b78e-4fdd-9a6b-922b5ebe9d3e/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_4175c4f9-b78e-4fdd-9a6b-922b5ebe9d3e/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted/easy2_true-no-overflow_true-termination_true-valid-memsafety.c -s /tmp/vcloud-vcloud-master/worker/working_dir_4175c4f9-b78e-4fdd-9a6b-922b5ebe9d3e/bin-2019/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_4175c4f9-b78e-4fdd-9a6b-922b5ebe9d3e/bin-2019/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 75d609d205f56e3164255114b6f6d5769a029995 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-1dbac8b [2018-10-27 05:48:25,274 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 05:48:25,275 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 05:48:25,285 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 05:48:25,285 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 05:48:25,286 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 05:48:25,287 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 05:48:25,288 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 05:48:25,290 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 05:48:25,291 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 05:48:25,291 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 05:48:25,291 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 05:48:25,292 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 05:48:25,293 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 05:48:25,294 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 05:48:25,295 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 05:48:25,295 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 05:48:25,297 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 05:48:25,299 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 05:48:25,300 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 05:48:25,301 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 05:48:25,302 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 05:48:25,304 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 05:48:25,304 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 05:48:25,305 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 05:48:25,305 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 05:48:25,307 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 05:48:25,307 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 05:48:25,308 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 05:48:25,309 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 05:48:25,309 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 05:48:25,310 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 05:48:25,310 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 05:48:25,311 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 05:48:25,311 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 05:48:25,312 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 05:48:25,312 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_4175c4f9-b78e-4fdd-9a6b-922b5ebe9d3e/bin-2019/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf [2018-10-27 05:48:25,325 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 05:48:25,325 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 05:48:25,326 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 05:48:25,326 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 05:48:25,326 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 05:48:25,326 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 05:48:25,327 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 05:48:25,327 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 05:48:25,327 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 05:48:25,327 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 05:48:25,327 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 05:48:25,328 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 05:48:25,328 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-10-27 05:48:25,328 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 05:48:25,328 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 05:48:25,328 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 05:48:25,328 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 05:48:25,329 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 05:48:25,329 INFO L133 SettingsManager]: * Check absence of signed integer overflows=true [2018-10-27 05:48:25,329 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 05:48:25,329 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 05:48:25,329 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 05:48:25,329 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 05:48:25,329 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 05:48:25,330 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 05:48:25,332 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 05:48:25,332 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 05:48:25,332 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 05:48:25,333 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 05:48:25,333 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 05:48:25,333 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 05:48:25,333 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 05:48:25,333 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 05:48:25,333 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_4175c4f9-b78e-4fdd-9a6b-922b5ebe9d3e/bin-2019/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 75d609d205f56e3164255114b6f6d5769a029995 [2018-10-27 05:48:25,382 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 05:48:25,391 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 05:48:25,395 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 05:48:25,396 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 05:48:25,396 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 05:48:25,397 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_4175c4f9-b78e-4fdd-9a6b-922b5ebe9d3e/bin-2019/utaipan/../../sv-benchmarks/c/termination-crafted/easy2_true-no-overflow_true-termination_true-valid-memsafety.c [2018-10-27 05:48:25,448 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_4175c4f9-b78e-4fdd-9a6b-922b5ebe9d3e/bin-2019/utaipan/data/934e31f68/75af5987769d4086a748bf73136cc95d/FLAGdc5361ba0 [2018-10-27 05:48:25,810 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 05:48:25,810 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_4175c4f9-b78e-4fdd-9a6b-922b5ebe9d3e/sv-benchmarks/c/termination-crafted/easy2_true-no-overflow_true-termination_true-valid-memsafety.c [2018-10-27 05:48:25,817 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_4175c4f9-b78e-4fdd-9a6b-922b5ebe9d3e/bin-2019/utaipan/data/934e31f68/75af5987769d4086a748bf73136cc95d/FLAGdc5361ba0 [2018-10-27 05:48:25,829 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_4175c4f9-b78e-4fdd-9a6b-922b5ebe9d3e/bin-2019/utaipan/data/934e31f68/75af5987769d4086a748bf73136cc95d [2018-10-27 05:48:25,832 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 05:48:25,833 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-10-27 05:48:25,834 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 05:48:25,834 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 05:48:25,838 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 05:48:25,839 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:48:25" (1/1) ... [2018-10-27 05:48:25,841 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ccde937 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:48:25, skipping insertion in model container [2018-10-27 05:48:25,842 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:48:25" (1/1) ... [2018-10-27 05:48:25,850 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 05:48:25,861 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 05:48:25,969 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 05:48:25,972 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 05:48:25,984 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 05:48:25,993 INFO L193 MainTranslator]: Completed translation [2018-10-27 05:48:25,994 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:48:25 WrapperNode [2018-10-27 05:48:25,994 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 05:48:25,994 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 05:48:25,995 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 05:48:25,995 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 05:48:26,002 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:48:25" (1/1) ... [2018-10-27 05:48:26,007 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:48:25" (1/1) ... [2018-10-27 05:48:26,013 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 05:48:26,013 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 05:48:26,013 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 05:48:26,013 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 05:48:26,022 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:48:25" (1/1) ... [2018-10-27 05:48:26,022 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:48:25" (1/1) ... [2018-10-27 05:48:26,022 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:48:25" (1/1) ... [2018-10-27 05:48:26,022 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:48:25" (1/1) ... [2018-10-27 05:48:26,025 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:48:25" (1/1) ... [2018-10-27 05:48:26,030 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:48:25" (1/1) ... [2018-10-27 05:48:26,031 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:48:25" (1/1) ... [2018-10-27 05:48:26,032 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 05:48:26,032 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 05:48:26,032 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 05:48:26,032 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 05:48:26,033 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:48:25" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4175c4f9-b78e-4fdd-9a6b-922b5ebe9d3e/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 05:48:26,150 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 05:48:26,151 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 05:48:26,151 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 05:48:26,151 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 05:48:26,151 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 05:48:26,151 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 05:48:26,492 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 05:48:26,492 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:48:26 BoogieIcfgContainer [2018-10-27 05:48:26,492 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 05:48:26,493 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 05:48:26,493 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 05:48:26,498 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 05:48:26,506 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 05:48:25" (1/3) ... [2018-10-27 05:48:26,507 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52019d29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:48:26, skipping insertion in model container [2018-10-27 05:48:26,507 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:48:25" (2/3) ... [2018-10-27 05:48:26,507 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52019d29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:48:26, skipping insertion in model container [2018-10-27 05:48:26,507 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:48:26" (3/3) ... [2018-10-27 05:48:26,509 INFO L112 eAbstractionObserver]: Analyzing ICFG easy2_true-no-overflow_true-termination_true-valid-memsafety.c [2018-10-27 05:48:26,525 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 05:48:26,551 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2018-10-27 05:48:26,572 INFO L257 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2018-10-27 05:48:26,606 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 05:48:26,607 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 05:48:26,607 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 05:48:26,607 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 05:48:26,607 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 05:48:26,608 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 05:48:26,608 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 05:48:26,608 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 05:48:26,625 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2018-10-27 05:48:26,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-10-27 05:48:26,635 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:48:26,636 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 05:48:26,638 INFO L424 AbstractCegarLoop]: === Iteration 1 === [mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-10-27 05:48:26,645 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:48:26,646 INFO L82 PathProgramCache]: Analyzing trace with hash -895809593, now seen corresponding path program 1 times [2018-10-27 05:48:26,648 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:48:26,697 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:48:26,698 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:48:26,698 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:48:26,698 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:48:26,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:48:26,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 05:48:26,809 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 05:48:26,809 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-27 05:48:26,809 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 05:48:26,812 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 05:48:26,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 05:48:26,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 05:48:26,824 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 3 states. [2018-10-27 05:48:26,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:48:26,855 INFO L93 Difference]: Finished difference Result 37 states and 40 transitions. [2018-10-27 05:48:26,856 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 05:48:26,857 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2018-10-27 05:48:26,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:48:26,865 INFO L225 Difference]: With dead ends: 37 [2018-10-27 05:48:26,865 INFO L226 Difference]: Without dead ends: 23 [2018-10-27 05:48:26,868 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 05:48:26,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-10-27 05:48:26,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2018-10-27 05:48:26,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-10-27 05:48:26,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2018-10-27 05:48:26,895 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 8 [2018-10-27 05:48:26,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:48:26,896 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2018-10-27 05:48:26,896 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 05:48:26,896 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2018-10-27 05:48:26,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-10-27 05:48:26,896 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:48:26,897 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 05:48:26,897 INFO L424 AbstractCegarLoop]: === Iteration 2 === [mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-10-27 05:48:26,897 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:48:26,897 INFO L82 PathProgramCache]: Analyzing trace with hash -2000293559, now seen corresponding path program 1 times [2018-10-27 05:48:26,897 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:48:26,899 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:48:26,899 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:48:26,899 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:48:26,899 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:48:26,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:48:26,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 05:48:26,939 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 05:48:26,939 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-27 05:48:26,939 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 05:48:26,940 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 05:48:26,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 05:48:26,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 05:48:26,941 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 3 states. [2018-10-27 05:48:26,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:48:26,973 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2018-10-27 05:48:26,973 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 05:48:26,973 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2018-10-27 05:48:26,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:48:26,974 INFO L225 Difference]: With dead ends: 22 [2018-10-27 05:48:26,974 INFO L226 Difference]: Without dead ends: 21 [2018-10-27 05:48:26,975 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 05:48:26,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-10-27 05:48:26,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-10-27 05:48:26,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-10-27 05:48:26,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2018-10-27 05:48:26,977 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 9 [2018-10-27 05:48:26,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:48:26,977 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2018-10-27 05:48:26,977 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 05:48:26,977 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2018-10-27 05:48:26,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-10-27 05:48:26,980 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:48:26,980 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 05:48:26,980 INFO L424 AbstractCegarLoop]: === Iteration 3 === [mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-10-27 05:48:26,980 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:48:26,980 INFO L82 PathProgramCache]: Analyzing trace with hash -1879558135, now seen corresponding path program 1 times [2018-10-27 05:48:26,981 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:48:26,982 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:48:26,982 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:48:26,982 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:48:26,982 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:48:26,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:48:27,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 05:48:27,015 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 05:48:27,015 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-27 05:48:27,015 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 05:48:27,016 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 05:48:27,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 05:48:27,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 05:48:27,016 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 3 states. [2018-10-27 05:48:27,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:48:27,035 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2018-10-27 05:48:27,036 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 05:48:27,036 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2018-10-27 05:48:27,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:48:27,036 INFO L225 Difference]: With dead ends: 21 [2018-10-27 05:48:27,037 INFO L226 Difference]: Without dead ends: 20 [2018-10-27 05:48:27,037 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 05:48:27,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2018-10-27 05:48:27,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2018-10-27 05:48:27,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-10-27 05:48:27,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2018-10-27 05:48:27,040 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 10 [2018-10-27 05:48:27,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:48:27,041 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2018-10-27 05:48:27,041 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 05:48:27,041 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2018-10-27 05:48:27,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-10-27 05:48:27,041 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:48:27,041 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 05:48:27,042 INFO L424 AbstractCegarLoop]: === Iteration 4 === [mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-10-27 05:48:27,042 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:48:27,042 INFO L82 PathProgramCache]: Analyzing trace with hash 1863240011, now seen corresponding path program 1 times [2018-10-27 05:48:27,042 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:48:27,043 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:48:27,043 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:48:27,043 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:48:27,044 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:48:27,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:48:27,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 05:48:27,080 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 05:48:27,080 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-27 05:48:27,080 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 05:48:27,081 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 05:48:27,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 05:48:27,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 05:48:27,081 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 3 states. [2018-10-27 05:48:27,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:48:27,116 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2018-10-27 05:48:27,116 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 05:48:27,116 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2018-10-27 05:48:27,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:48:27,117 INFO L225 Difference]: With dead ends: 24 [2018-10-27 05:48:27,117 INFO L226 Difference]: Without dead ends: 23 [2018-10-27 05:48:27,117 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 05:48:27,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-10-27 05:48:27,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-10-27 05:48:27,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-10-27 05:48:27,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2018-10-27 05:48:27,120 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 11 [2018-10-27 05:48:27,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:48:27,120 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2018-10-27 05:48:27,120 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 05:48:27,120 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2018-10-27 05:48:27,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-10-27 05:48:27,121 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:48:27,121 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 05:48:27,121 INFO L424 AbstractCegarLoop]: === Iteration 5 === [mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-10-27 05:48:27,121 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:48:27,121 INFO L82 PathProgramCache]: Analyzing trace with hash 1925865547, now seen corresponding path program 1 times [2018-10-27 05:48:27,121 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:48:27,124 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:48:27,125 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:48:27,125 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:48:27,125 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:48:27,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:48:27,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 05:48:27,167 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 05:48:27,167 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-27 05:48:27,168 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 05:48:27,168 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 05:48:27,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 05:48:27,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 05:48:27,169 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 3 states. [2018-10-27 05:48:27,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:48:27,194 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2018-10-27 05:48:27,195 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 05:48:27,195 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2018-10-27 05:48:27,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:48:27,196 INFO L225 Difference]: With dead ends: 23 [2018-10-27 05:48:27,196 INFO L226 Difference]: Without dead ends: 22 [2018-10-27 05:48:27,197 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 05:48:27,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2018-10-27 05:48:27,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2018-10-27 05:48:27,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-10-27 05:48:27,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2018-10-27 05:48:27,201 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 12 [2018-10-27 05:48:27,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:48:27,201 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2018-10-27 05:48:27,201 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 05:48:27,201 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2018-10-27 05:48:27,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-10-27 05:48:27,202 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:48:27,202 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 05:48:27,202 INFO L424 AbstractCegarLoop]: === Iteration 6 === [mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-10-27 05:48:27,202 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:48:27,203 INFO L82 PathProgramCache]: Analyzing trace with hash -427710131, now seen corresponding path program 1 times [2018-10-27 05:48:27,203 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:48:27,204 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:48:27,204 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:48:27,204 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:48:27,205 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:48:27,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:48:27,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 05:48:27,259 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 05:48:27,260 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-27 05:48:27,260 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 05:48:27,260 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 05:48:27,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 05:48:27,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 05:48:27,261 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 3 states. [2018-10-27 05:48:27,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:48:27,285 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2018-10-27 05:48:27,286 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 05:48:27,286 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2018-10-27 05:48:27,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:48:27,287 INFO L225 Difference]: With dead ends: 22 [2018-10-27 05:48:27,287 INFO L226 Difference]: Without dead ends: 21 [2018-10-27 05:48:27,288 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 05:48:27,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-10-27 05:48:27,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-10-27 05:48:27,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-10-27 05:48:27,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2018-10-27 05:48:27,293 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 13 [2018-10-27 05:48:27,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:48:27,294 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2018-10-27 05:48:27,294 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 05:48:27,294 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2018-10-27 05:48:27,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-10-27 05:48:27,295 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:48:27,295 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 05:48:27,295 INFO L424 AbstractCegarLoop]: === Iteration 7 === [mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-10-27 05:48:27,295 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:48:27,296 INFO L82 PathProgramCache]: Analyzing trace with hash 1255492539, now seen corresponding path program 1 times [2018-10-27 05:48:27,296 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:48:27,299 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:48:27,300 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:48:27,300 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:48:27,300 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:48:27,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:48:27,347 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 05:48:27,347 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:48:27,348 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 05:48:27,349 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 17 with the following transitions: [2018-10-27 05:48:27,351 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [14], [15], [16], [18], [20], [22], [24], [26], [32], [33], [34] [2018-10-27 05:48:27,396 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-27 05:48:27,396 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 05:48:27,592 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 05:48:27,593 INFO L272 AbstractInterpreter]: Visited 14 different actions 77 times. Merged at 8 different actions 56 times. Widened at 1 different actions 3 times. Found 1 fixpoints after 1 different actions. Largest state had 4 variables. [2018-10-27 05:48:27,610 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:48:27,610 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 05:48:27,666 INFO L227 lantSequenceWeakener]: Weakened 5 states. On average, predicates are now at 40% of their original sizes. [2018-10-27 05:48:27,666 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 05:48:27,896 INFO L415 sIntCurrentIteration]: We unified 15 AI predicates to 15 [2018-10-27 05:48:27,896 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 05:48:27,896 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 05:48:27,897 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [3] total 9 [2018-10-27 05:48:27,897 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 05:48:27,897 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-27 05:48:27,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-27 05:48:27,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2018-10-27 05:48:27,898 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 8 states. [2018-10-27 05:48:28,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:48:28,456 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2018-10-27 05:48:28,457 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-27 05:48:28,457 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 16 [2018-10-27 05:48:28,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:48:28,457 INFO L225 Difference]: With dead ends: 28 [2018-10-27 05:48:28,457 INFO L226 Difference]: Without dead ends: 27 [2018-10-27 05:48:28,458 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2018-10-27 05:48:28,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-10-27 05:48:28,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2018-10-27 05:48:28,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-10-27 05:48:28,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2018-10-27 05:48:28,462 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 16 [2018-10-27 05:48:28,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:48:28,462 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2018-10-27 05:48:28,463 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-27 05:48:28,463 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2018-10-27 05:48:28,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-10-27 05:48:28,463 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:48:28,463 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 05:48:28,463 INFO L424 AbstractCegarLoop]: === Iteration 8 === [mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-10-27 05:48:28,464 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:48:28,464 INFO L82 PathProgramCache]: Analyzing trace with hash 1803063511, now seen corresponding path program 1 times [2018-10-27 05:48:28,464 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:48:28,465 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:48:28,465 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:48:28,465 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:48:28,465 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:48:28,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:48:28,544 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 05:48:28,544 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:48:28,544 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 05:48:28,544 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 20 with the following transitions: [2018-10-27 05:48:28,545 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [14], [16], [18], [20], [21], [22], [24], [26], [32], [33], [34] [2018-10-27 05:48:28,546 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-27 05:48:28,546 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 05:48:28,620 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 05:48:28,620 INFO L272 AbstractInterpreter]: Visited 14 different actions 77 times. Merged at 8 different actions 56 times. Widened at 1 different actions 3 times. Found 1 fixpoints after 1 different actions. Largest state had 4 variables. [2018-10-27 05:48:28,661 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:48:28,661 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 05:48:28,688 INFO L227 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 50% of their original sizes. [2018-10-27 05:48:28,688 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 05:48:28,926 INFO L415 sIntCurrentIteration]: We unified 18 AI predicates to 18 [2018-10-27 05:48:28,927 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 05:48:28,927 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 05:48:28,927 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [3] total 9 [2018-10-27 05:48:28,927 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 05:48:28,927 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-27 05:48:28,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-27 05:48:28,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2018-10-27 05:48:28,928 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand 8 states. [2018-10-27 05:48:29,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:48:29,229 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2018-10-27 05:48:29,229 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 05:48:29,229 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2018-10-27 05:48:29,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:48:29,230 INFO L225 Difference]: With dead ends: 26 [2018-10-27 05:48:29,230 INFO L226 Difference]: Without dead ends: 0 [2018-10-27 05:48:29,231 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2018-10-27 05:48:29,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-27 05:48:29,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-27 05:48:29,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-27 05:48:29,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-27 05:48:29,232 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2018-10-27 05:48:29,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:48:29,232 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-27 05:48:29,232 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-27 05:48:29,232 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-27 05:48:29,232 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-27 05:48:29,237 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-10-27 05:48:29,358 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-10-27 05:48:29,358 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-10-27 05:48:29,358 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-10-27 05:48:29,358 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-10-27 05:48:29,358 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-10-27 05:48:29,359 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-10-27 05:48:29,359 INFO L425 ceAbstractionStarter]: For program point mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2018-10-27 05:48:29,359 INFO L425 ceAbstractionStarter]: For program point mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 21) no Hoare annotation was computed. [2018-10-27 05:48:29,359 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 15 26) no Hoare annotation was computed. [2018-10-27 05:48:29,359 INFO L425 ceAbstractionStarter]: For program point L23(line 23) no Hoare annotation was computed. [2018-10-27 05:48:29,359 INFO L425 ceAbstractionStarter]: For program point L23-1(line 23) no Hoare annotation was computed. [2018-10-27 05:48:29,359 INFO L425 ceAbstractionStarter]: For program point L21(line 21) no Hoare annotation was computed. [2018-10-27 05:48:29,359 INFO L425 ceAbstractionStarter]: For program point mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 23) no Hoare annotation was computed. [2018-10-27 05:48:29,360 INFO L425 ceAbstractionStarter]: For program point L21-1(line 21) no Hoare annotation was computed. [2018-10-27 05:48:29,360 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 15 26) no Hoare annotation was computed. [2018-10-27 05:48:29,360 INFO L425 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 21) no Hoare annotation was computed. [2018-10-27 05:48:29,360 INFO L425 ceAbstractionStarter]: For program point mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2018-10-27 05:48:29,360 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 15 26) the Hoare annotation is: true [2018-10-27 05:48:29,360 INFO L425 ceAbstractionStarter]: For program point L22(line 22) no Hoare annotation was computed. [2018-10-27 05:48:29,360 INFO L425 ceAbstractionStarter]: For program point L22-1(line 22) no Hoare annotation was computed. [2018-10-27 05:48:29,360 INFO L425 ceAbstractionStarter]: For program point L20-1(lines 20 24) no Hoare annotation was computed. [2018-10-27 05:48:29,360 INFO L425 ceAbstractionStarter]: For program point mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 23) no Hoare annotation was computed. [2018-10-27 05:48:29,361 INFO L421 ceAbstractionStarter]: At program point L20-3(lines 20 24) the Hoare annotation is: (let ((.cse0 (+ main_~x~0 main_~y~0))) (and (<= 0 (+ main_~y~0 main_~z~0 2147483648)) (<= 0 .cse0) (<= .cse0 0) (<= (+ main_~x~0 main_~z~0) 2147483647) (<= main_~y~0 0))) [2018-10-27 05:48:29,361 INFO L425 ceAbstractionStarter]: For program point L20-4(lines 20 24) no Hoare annotation was computed. [2018-10-27 05:48:29,371 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 05:48:29 BoogieIcfgContainer [2018-10-27 05:48:29,371 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 05:48:29,371 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-10-27 05:48:29,372 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-10-27 05:48:29,372 INFO L276 PluginConnector]: Witness Printer initialized [2018-10-27 05:48:29,372 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:48:26" (3/4) ... [2018-10-27 05:48:29,376 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-10-27 05:48:29,382 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-10-27 05:48:29,382 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-10-27 05:48:29,386 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2018-10-27 05:48:29,386 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-10-27 05:48:29,386 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-10-27 05:48:29,423 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_4175c4f9-b78e-4fdd-9a6b-922b5ebe9d3e/bin-2019/utaipan/witness.graphml [2018-10-27 05:48:29,423 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-10-27 05:48:29,424 INFO L168 Benchmark]: Toolchain (without parser) took 3591.30 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 151.0 MB). Free memory was 954.5 MB in the beginning and 982.6 MB in the end (delta: -28.2 MB). Peak memory consumption was 122.8 MB. Max. memory is 11.5 GB. [2018-10-27 05:48:29,425 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 980.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-27 05:48:29,426 INFO L168 Benchmark]: CACSL2BoogieTranslator took 159.82 ms. Allocated memory is still 1.0 GB. Free memory was 954.5 MB in the beginning and 943.6 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 11.5 GB. [2018-10-27 05:48:29,426 INFO L168 Benchmark]: Boogie Procedure Inliner took 18.36 ms. Allocated memory is still 1.0 GB. Free memory is still 943.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-27 05:48:29,427 INFO L168 Benchmark]: Boogie Preprocessor took 18.91 ms. Allocated memory is still 1.0 GB. Free memory is still 943.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-27 05:48:29,427 INFO L168 Benchmark]: RCFGBuilder took 460.24 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 151.0 MB). Free memory was 943.6 MB in the beginning and 1.1 GB in the end (delta: -196.2 MB). Peak memory consumption was 23.7 MB. Max. memory is 11.5 GB. [2018-10-27 05:48:29,427 INFO L168 Benchmark]: TraceAbstraction took 2878.15 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 985.3 MB in the end (delta: 154.5 MB). Peak memory consumption was 154.5 MB. Max. memory is 11.5 GB. [2018-10-27 05:48:29,428 INFO L168 Benchmark]: Witness Printer took 51.64 ms. Allocated memory is still 1.2 GB. Free memory was 985.3 MB in the beginning and 982.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-10-27 05:48:29,431 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 980.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 159.82 ms. Allocated memory is still 1.0 GB. Free memory was 954.5 MB in the beginning and 943.6 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 18.36 ms. Allocated memory is still 1.0 GB. Free memory is still 943.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 18.91 ms. Allocated memory is still 1.0 GB. Free memory is still 943.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 460.24 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 151.0 MB). Free memory was 943.6 MB in the beginning and 1.1 GB in the end (delta: -196.2 MB). Peak memory consumption was 23.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2878.15 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 985.3 MB in the end (delta: 154.5 MB). Peak memory consumption was 154.5 MB. Max. memory is 11.5 GB. * Witness Printer took 51.64 ms. Allocated memory is still 1.2 GB. Free memory was 985.3 MB in the beginning and 982.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 23]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 21]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 23]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 21]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: (((0 <= y + z + 2147483648 && 0 <= x + y) && x + y <= 0) && x + z <= 2147483647) && y <= 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 24 locations, 6 error locations. SAFE Result, 2.7s OverallTime, 8 OverallIterations, 2 TraceHistogramMax, 1.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.1s HoareAnnotationTime, HoareTripleCheckerStatistics: 104 SDtfs, 41 SDslu, 102 SDs, 0 SdLazy, 82 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 48 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.3s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 1.0 AbsIntWeakeningRatio, 0.18181818181818182 AbsIntAvgWeakeningVarsNumRemoved, 3.272727272727273 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 6 NumberOfFragments, 29 HoareAnnotationTreeSize, 5 FomulaSimplifications, 128 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 79 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 98 NumberOfCodeBlocks, 98 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 90 ConstructedInterpolants, 0 QuantifiedInterpolants, 2844 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 6 PerfectInterpolantSequences, 0/9 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...